Ynesmexia seemannii

Taxonavigation

Taxonavigation: Polypodiales
Superregnum: Eukaryota Cladus: Diaphoretickes Cladus: CAM Cladus: Archaeplastida Regnum: Plantae Divisio: Tracheophyta Divisio: Pteridophyta Classis: Polypodiopsida Ordo: Polypodiales

Familia: Pteridaceae
Subfamilia: Cheilanthoideae
Genus: Ynesmexia
Species: Ynesmexia seemannii

Name

Ynesmexia seemannii (Hook.) Fauskee & Windham, Taxon 74(4): 782 (2025).

Synonyms

• Basionym
  • Pellaea seemannii Hook., Sp. Fil. 2: 141, t. 117 B (1858).
    • Type. Mexico. Sinaloa: Mazatlán, Seemann 1447 (K, photo US).
• Homotypic
  • Allosorus seemannii (Hook.) Kuntze, Revis. Gen. Pl. 2: 806 (1891).
  • Cassebeera seemannii (Hook.) Kaulf. in Farwell, Amer. Midl. Naturalist 12: 281 (1931).
  • Cheilanthes lozanoi var. seemannii (Hook.) Mickel & Beitel, Mem. New York Bot. Gard. 46 (Pterid. Fl. Oaxaca): 118 (1988).
• Heterotypic
  • Pellaea lozanoi Maxon, Contr. U. S. Natl. Herb. 10: 500 (1908), "lozanii".
    • Type: Mexico. Guerrero: Near Iguala, Lozano s.n. [Pringle 13947] (Holotype: US).
      • Eponym of Filemón L. Lozano
    • Cheilanthes lozanoi (Maxon) R.M.Tryon & A.F.Tryon, Rhodora 83(833): 133 (1981), "lozanii".
    • Hemionitis lozanoi (Maxon) Christenh., Global Fl. 4: 17 (2018).

Distribution

Native distribution areas:

Continental: Northern America Regional: Mexico Mexico Central (México Distrito Federal, México State, Morelos, Puebla), Mexico Northeast (Aguascalientes (doubtful), Chihuahua, Durango, Guanajuato, Querétaro, San Luis Potosí, Tamaulipas), Mexico Northwest (Baja California Sur, Sinaloa, Sonora), Mexico Southeast (Chiapas), Mexico Southwest (Colima, Guerrero, Jalisco, Michoacán, Nayarit, Oaxaca). Continental: Southern America Regional: Central America Honduras. References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition

References

Primary references

• Fauskee, B.D., Windham, M.D. & Pryer, K.M. 2025. Ynesmexia: A novel genus uniting morphologically disparate cheilanthoid ferns (Pteridaceae). Taxon 74(4): 768–786. DOI: 10.1002/tax.13340 ResearchGate Reference page. 
• Mickel, J.T. & Beitel, J.M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Memoirs of the New York Botanical Garden 46: 1–568. Reference page. 
• Tryon, R.M. & Tryon, A.F. 1981. Taxonomic and Nomenclatural Notes on Ferns. Rhodora 83(833): 133–137. JSTOR BHL Reference page. 

Additional references

• Mickel, J.T. & Smith, A.R. 2004. The Pteridophytes of Mexico. Part I (Descriptions and Maps). Memoirs of The New York Botanical Garden 88: i–xi, 1–1054. Reference page. 

Links

• Hassler, M. 2025. World Ferns. Checklist of Ferns and Lycophytes of the World. . Ynesmexia seemannii Accessed: 30 Apr 2025. Reference page.
• Govaerts, R. et al. 2025. Ynesmexia seemannii in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2025 Apr 30. Reference page. 
• Tropicos.org 2025. Ynesmexia seemannii. Missouri Botanical Garden. Published online. Accessed: 30 Apr 2025. Reference page.
• International Plant Names Index. 2025. Ynesmexia seemannii. Published online. Accessed: 30 Apr 2025. Reference page.